The team also purchased the contract of Express pitcher Michael Kirkman. A corresponding roster move has not been made yet, but either Tanner Scheppers or Shin-Soo Choo will be transferred to the 60-day disabled list to make room on the newly expanded 40-man roster for Kirkman.

The moves become official on Tuesday.

Spencer Patton wraps up the initial list of September callups, but he won't join the team until Thursday. The Rangers acquired Patton from the Royals for reliever Jason Frasor in July.